addressing climate change adaptation in regional transportation plans
addressing climate change adaptation in regional transportation plans addressing climate change adaptation in regional transportation plans
APGSTART HERE:PLANNING FOR ADAPTIVE COMMUNITIESDefiningLocal & RegionalIMPACTSUSE AS NEEDED:UnderstandingREGIONALCharacteristicsIdentifyingAdaptationSTRATEGIESFigure 1. The four California Adaptation Planning Guide (APG) documents.All APG users should start with the APG: Planning for Adaptive Communities. Theother three documents support the process presented in the first document byproviding additional information and greater detail.What is the APG: Understanding RegionalCharacteristics document and how should it be used?The APG: Understanding Regional Characteristics is organized into a series of climateimpact regions (see Figure 2). The choice to designate regions is due to thestatewide diversity in biophysical setting, climate, and jurisdiction characteristics.While conditions may be diverse within each region, the range of conditions willbe narrower than at the statewide level. Designating regions allows for greaterdepth and more detailed information to be presented.Each region is still diverse. The regional section is meant to summarize someof the key considerations for each region, above and beyond the statewideconsiderations presented in APG: Defining Local & Regional Impacts. If an impactis included in the APG: Defining Local & Regional Impacts, it is not included in thisdocument unless there are region-specific details that require assessment forimpact evaluation such as a paricularly vulnerable ecosystem unique to the region.As a result, some of the presented information varies between regions basedon how well, or not, the information in APG: Defining Local & Regional Impactsapplies to the region. Each region includes a summary of climate exposure,considerations considered critical for jurisdictions in the region, and regionallyspecificresources that may aid communities in the region. Communities can usethis document to assess regional context or identify other jurisdictions facingsimilar climate pressures.APG: UNDERSTANDING REGIONAL CHARACTERISTICS PAGE 2
How were the regions defined?Regions were designated based on county boundaries in combination withprojected climate impacts, existing environmental setting, socioeconomic factors,and regional designations. The choice to use counties (e.g. political boundaries)was based on a commitment to make the APG as useful as possible for localgovernments, including counties. The counties were clustered into regions basedon the following factors:• Projected climate change impacts were evaluated using Cal-Adapt. Cal-Adaptclimate impact projections for precipitation, temperature, snowpack, andwildfire risk were used to identify counties that share a similar group ofprojected impacts.• Existing regional designations were evaluated because there are someclimate-related impacts best addressed at a regional scale. Countiesthat share a regional designation (e.g., air districts, regional water qualitycontrol boards) are more likely to have already established relationshipswith neighboring jurisdictions that are necessary for regional strategydevelopment and implementation. The regional designations examinedinclude regional water quality control boards, air basins and air districts,California Emergency Management Agency Regions, and metropolitanplanning organizations. Figures 3 through 6 overlay the impact regions withthese regional designations.• Habitat was assessed based on bioregion, habitat, and land cover mapsdeveloped by the California Department of Forestry and Fire Protection,Fire and Resource Assessment Program (FRAP). These data were includedwhen determining the regions because the potential consequences of achange in climate (e.g., temperature and precipitation) vary based on thepreexisting biophysical setting. Figure 7 displays the climate impact regionsin comparison to bioregion.• Socioeconomic characteristics, including the location of major populationcenters and economic base, were considered. These characteristics wereparticularly important for counties that have more than one area withdistinct suites of projected climate impacts. For example, a county thatshares some characteristics with the Northern Sierra and others with theNorthern Central Valley was evaluated based on which setting supportedthe local economy to a greater degree and/or was home to a larger portionof residents.PAGE 3APG: UNDERSTANDING REGIONAL CHARACTERISTICS
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APGSTART HERE:PLANNING FOR ADAPTIVE COMMUNITIESDef<strong>in</strong><strong>in</strong>gLocal & RegionalIMPACTSUSE AS NEEDED:Understand<strong>in</strong>gREGIONALCharacteristicsIdentify<strong>in</strong>gAdaptationSTRATEGIESFigure 1. The four California Adaptation Plann<strong>in</strong>g Guide (APG) documents.All APG users should start with the APG: Plann<strong>in</strong>g for Adaptive Communities. Theother three documents support the process presented <strong>in</strong> the first document byprovid<strong>in</strong>g additional <strong>in</strong>formation and greater detail.What is the APG: Understand<strong>in</strong>g RegionalCharacteristics document and how should it be used?The APG: Understand<strong>in</strong>g Regional Characteristics is organized <strong>in</strong>to a series of <strong>climate</strong>impact regions (see Figure 2). The choice to designate regions is due to thestatewide diversity <strong>in</strong> biophysical sett<strong>in</strong>g, <strong>climate</strong>, and jurisdiction characteristics.While conditions may be diverse with<strong>in</strong> each region, the range of conditions willbe narrower than at the statewide level. Designat<strong>in</strong>g regions allows for greaterdepth and more detailed <strong>in</strong>formation to be presented.Each region is still diverse. The <strong>regional</strong> section is meant to summarize someof the key considerations for each region, above and beyond the statewideconsiderations presented <strong>in</strong> APG: Def<strong>in</strong><strong>in</strong>g Local & Regional Impacts. If an impactis <strong>in</strong>cluded <strong>in</strong> the APG: Def<strong>in</strong><strong>in</strong>g Local & Regional Impacts, it is not <strong>in</strong>cluded <strong>in</strong> thisdocument unless there are region-specific details that require assessment forimpact evaluation such as a paricularly vulnerable ecosystem unique to the region.As a result, some of the presented <strong>in</strong>formation varies between regions basedon how well, or not, the <strong>in</strong>formation <strong>in</strong> APG: Def<strong>in</strong><strong>in</strong>g Local & Regional Impactsapplies to the region. Each region <strong>in</strong>cludes a summary of <strong>climate</strong> exposure,considerations considered critical for jurisdictions <strong>in</strong> the region, and <strong>regional</strong>lyspecificresources that may aid communities <strong>in</strong> the region. Communities can usethis document to assess <strong>regional</strong> context or identify other jurisdictions fac<strong>in</strong>gsimilar <strong>climate</strong> pressures.APG: UNDERSTANDING REGIONAL CHARACTERISTICS PAGE 2